Magnetic and Heat Capacity Study of the new Gd1-xCexNi5 Series
A. Dzubinskaa ,, M. Reiffers b, J.I. Espeso c, J. Rodríguez Fernández c
aFaculty of Natural Sciences, P.J. Safarik University, 040 01 Košice, Slovakia
bFaculty of Humanities and Natural Sciences, Prešov University, 081 16 Prešov, Slovakia
cDepartamento CITIMAC, Universidad de Cantabria, 390 05 Santander, Spain
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We have prepared a new system of Gd1-xCexNi5 polycrystalline samples with concentrations x =0, 0.2, 0.5, and 0.8 in order to study the influence of different rare-earths substitutions on the ground state connected with spin fluctuations. GdNi5 is a ferromagnetic compound with TC=31.8 K and CeNi5 is a well-known spin fluctuation compound without magnetic ordering down to the lowest temperatures. X-ray diffraction study confirms the hexagonal crystal structure and the single phase samples. Magnetic properties (M(T),M(B)) show that an increasing content of Ce depresses the transition temperature, TC, down to 4.9 K for x=0.8. The heat capacity measurements confirmed these results.

DOI: 10.12693/APhysPolA.131.997
PACS numbers: 71.27.+a, 75.30.-m, 75.30.Mb